body,html{
    padding: 0;
    margin: 0;
}
.disb{
    display: block;
}
.disn{
    display: none;
}
/* 左上方返回按钮 */
.backBox{
    /* border: 1px solid red; */
}
.backBox img{
    width: 15px;
}
.backBox span{
    margin-left: 5px;
    font-size: 18px;
    font-weight: bold;
    vertical-align: super;
    /* border: 1px solid red; */
}
/* 底部菜单栏 */
.footnavBox{    
    z-index: 333;
    position: fixed;
    bottom: 0;
    background: #fff;
    width: 100%;
    box-sizing: border-box;
    padding: 10px;
    overflow: auto;
    box-shadow: 2px 2px 20px 5px #d7d7d7;
}
.footnavBox a {
    float: left;
    width: 33%;
    color: black;
    text-decoration: none;
}
.footnavBox a p{
    text-align: center;
    margin: 0;
}
.footnavBox a i{
    display: block;
    margin: auto;
    text-align: center;
    height: 35px;
    width: 35px;
    background: url("../images/ico_footer2.png");
}
.footnavBox a:nth-of-type(1) i{
    background-position: -6px -8px;
}
.footnavBox a:nth-of-type(2) i{
    /* background-position: -45px -42px; */
    background-position: -45px -8px;
}
.footnavBox a:nth-of-type(3) i{
    background-position: -80px -8px;
}
.footnavBox a:nth-of-type(4) i{
    background-position: -118px -8px;
}

/*弹框提示*/
.tipBox{
    display: none;
    position: fixed;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    filter:alpha(opacity=80);
    /*border:2px solid red;*/
    color: #ffffff;
    text-align: center;
    z-index: 4444;
}
.tipBox p{
    margin-top: 40%;
}

/* 回到顶部 */
.totopBox{
    position: fixed;
    display: none;
    z-index: 44444;
    bottom: 100px;
    right: 20px;
    height: 45px;
    width: 45px;
    border-radius: 50%;
    text-align: center;
    background: rgba(25,25,25,0.1);
    /* background: #cacaca; */
}
.totopBox img{
    width: 70%;
    height: 70%;
    margin: 10%;
}